How come only protestant bishops follow what Paul says about the office of the Bishop?

Question

1 Timothy 3:2

A bishop then must be blameless, the husband of one wife, vigilant, sober, of good behaviour, given to hospitality, apt to teach;

seems only the protestants dont skip the "husband of one wife" part, and if Paul says that this is what Bishops are supposed to be, how are any catholic bishops really bishops?